Antifreezing liquid



Patented Aug. 2, 1932 OLIVER P. GBEE'NSTBEE'I', OF OWENSVIIIIIE' MISSOURI ANTIFREEZING LIQUID No Drawing.

This invention relates to the production of an anti-freezing liquid adapted to be used in the radiators of automobiles in place of alcohol, glyccrine or other anti-freeze mm- 6 tures now on the market.

The object of my invention is to provide an antifreezing mixture which relatively cheap, which is not dangerous and which Wlll prevent rust or corrosion of any part or parts 10 of theradiator.

My anti-freezing leum in the form of coal oil orkerosene to which has been added oil of mirbane (monomitro-benzene, C H NO this'mixture being brought to a boiling point and boiled for approximately thirty minutes or from thirty minutes to one hour in order toeliminate therefrom the lighter and more volatile fractions and thus raise the flash point of the kerosene. While I do not wish to be limited to any articular method or heating, preferably e mixture is heated by steam discharged throu h the tank containing'the kerosene and mii bane or the mixture may be heated by a steam coil extending throu h the oil, but any other means for heating t e oil, as for intance, by an electric coil or a stove may be used andbe within the scope of this invention.

' While in the usual se aration of kerosene from crude oil, some 0 the higher boiling oint fractions are eliminated, in ordinary erosene, there still remains dan erous and readily volatilized fractions whic must be eliminated before the oil can be used in a radiator. When etroleum is brought to a boiling point and kept at this point for some time, it throws ofl lighter fractions evidenced b the givin off of an exceedingly disagree- 40 a le odor. find that after the oil is boiled for from thirty to sixty minutes the odor ceases and no odor except that of ordinary kerosene can be noticed when the liquid is used in a car, no matter how hot the radiator may get. By bringing the oil to a boiling point and keeping it at this boiling point for approximatel a half hour or more, I find that the oil is no longer dangerous as this heating of the kerosene eliminates the lighter and more volatile fractions which are par- Application filed September 4,

liquid consists of petro- 1930. Serial No. 479,805.

ticularly explosive and raises the'flash point an appreciable amount. I

By mixing oil of mirbane with kerosene, I

secure a great working range. Some grades of kerosene start to boil at 180 F. while oil of mirbane does not boil until the.temperature is raised to 408 F. so that by mixing kerosene with oil of mirbane, I raise the boiling point to above that of water or above kerosene itself. By adding the proper quanso my of oil of mirbane, I can raise or lower the boiling and freezing point but preferably I will use a mixture that will not freeze until 43 F. has been reached and which shall not boil until 322 F. has been reached. This as high boiling point is very important as motors often get hot enough to boil away the water in the radiator.

By using this mixture, the motor will never get hot enough to cause the mixture in the radiator to boil. The oil of mirbane starts to freeze around zero. The kerosene does not freeze until a temperature of below zero is reached. Thus by boilin the kerosene and adding oil of mirbane, se- 75 cure a liquid particularly adapted to the radiators of automobiles as it will not freeze and will not boil except under exceptional circumstances.

While I have before referred to mixing oil of mirbane with the kerosene before boiling the latter, I do not wish to be limited to this as the oil of mirbane might be added to the liquid after the kerosene has been boiled. v y I find that by boiling the oil as stated, I raise its boiling point to approximately that r v of water. The oil while acting as a'cooling agent in the radiator will not freeze under practically any circumstances and will prevent rust and corrosion of any part or parts of the radiator.

While I do not wish to be limited to any particular proportion of the oil of mirbane relative to the kerosene, I am using and I find most effective one part of oil of mirbane to ten parts kerosene, but obviously these proportions maybe varied so as to make the mixture freeze or boil at different freezing or boiling points.

In addition to this, this mixture helps to no OLIVER P. GREENSTBEET. 

